Shading won't show up in the Properties shelf?
You have an old version of blender, either 2.66, 2.67 or 2.68. The current version is 2.78 with 2.79 to be released shortly.

In 2.69 the shading panel was added, before that the GLSL/Multitextured option was available in the Display panel and it is only available when Blender Render is the active render engine.